Condensed Consolidated Balance Sheets (Unaudited) - GAS - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Current Assets:
Cash and cash equivalents	$ 1,662	$ 1,798
Receivables —
Customer accounts	2,006	1,806
Unbilled revenues	638	711
Other accounts and notes	509	523
Accumulated provision for uncollectible accounts	(89)	(78)
Natural gas for sale	121	362
Prepaid expenses	739	330
Assets from risk management activities, net of collateral	405	151
Natural gas cost under recovery	306	266
Other regulatory assets	576	653
Other current assets	201	231
Total current assets	9,297	8,965
Property, Plant, and Equipment:
In service	116,259	115,592
Less: Accumulated depreciation	34,645	34,079
Plant in service, net of depreciation	81,614	81,513
Construction work in progress	9,337	8,771
Total property, plant, and equipment	91,790	91,108
Other Property and Investments:
Goodwill	5,280	5,280
Equity investments in unconsolidated subsidiaries	1,293	1,282
Other intangible assets, net of amortization	435	445
Miscellaneous property and investments	633	653
Total other property and investments	10,044	10,202
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	1,693	1,701
Prepaid pension costs	1,772	1,657
Other regulatory assets, deferred	5,372	5,577
Other deferred charges and assets	1,898	1,776
Total deferred charges and other assets	17,508	17,259
Total Assets	128,639	127,534
Current Liabilities:
Securities due within one year	1,193	2,157
Notes payable	2,330	1,440
Accounts payable —
Customer deposits	454	479
Accrued interest	404	533
Accrued compensation	574	1,070
Other regulatory liabilities	711	563
Other current liabilities	1,105	872
Total current liabilities	10,434	10,921
Long-term Debt	50,633	50,120
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	9,506	8,862
Deferred credits related to income taxes	5,365	5,401
Employee benefit obligations	1,526	1,550
Operating lease obligations, deferred	1,521	1,503
Other cost of removal obligations	2,030	2,103
Other deferred credits and liabilities	966	816
Total deferred credits and other liabilities	34,652	33,926
Total Liabilities	95,719	94,967
Common Stockholder's Equity (See accompanying statements)	32,629	32,276
Total Liabilities and Stockholders' Equity	128,639	127,534
SOUTHERN Co GAS
Current Assets:
Cash and cash equivalents	31	45
Receivables —
Customer accounts	603	462
Unbilled revenues	245	278
Other accounts and notes	52	49
Accumulated provision for uncollectible accounts	(51)	(39)
Natural gas for sale	121	362
Prepaid expenses	88	114
Assets from risk management activities, net of collateral	53	33
Natural gas cost under recovery	306	266
Other regulatory assets	104	136
Other current assets	47	49
Total current assets	1,599	1,755
Property, Plant, and Equipment:
In service	19,035	18,880
Less: Accumulated depreciation	5,159	5,067
Plant in service, net of depreciation	13,876	13,813
Construction work in progress	768	684
Total property, plant, and equipment	14,644	14,497
Other Property and Investments:
Goodwill	5,015	5,015
Equity investments in unconsolidated subsidiaries	1,178	1,173
Other intangible assets, net of amortization	34	37
Miscellaneous property and investments	19	19
Total other property and investments	6,246	6,244
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	67	70
Prepaid pension costs	183	175
Other regulatory assets, deferred	508	689
Other deferred charges and assets	130	130
Total deferred charges and other assets	888	1,064
Total Assets	23,377	23,560
Current Liabilities:
Securities due within one year	46	47
Notes payable	532	1,209
Accounts payable —
Affiliated	40	58
Other	349	361
Customer deposits	72	95
Accrued taxes	191	124
Accrued interest	68	59
Accrued compensation	66	110
Temporary LIFO liquidation	209	0
Other regulatory liabilities	72	8
Other current liabilities	140	155
Total current liabilities	1,785	2,226
Long-term Debt	6,814	6,855
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	1,568	1,555
Deferred credits related to income taxes	808	816
Employee benefit obligations	168	176
Operating lease obligations, deferred	58	59
Other cost of removal obligations	1,692	1,683
Accrued environmental remediation	189	197
Other deferred credits and liabilities	120	77
Total deferred credits and other liabilities	4,603	4,563
Total Liabilities	13,202	13,644
Common Stockholder's Equity (See accompanying statements)	10,175	9,916
Total Liabilities and Stockholders' Equity	$ 23,377	$ 23,560